Abstract
To simulate detrimental events in a tokamak and provide a test-stand for a liquid-lithium infused trench (LiMIT) device [1], a pulsed plasma source utilizing a theta pinch in conjunction with a coaxial plasma accelerator has been developed. The plasma is characterized using a triple Langmuir probe, optical methods, and a calorimeter. Clear advantages have been observed with the application of a coaxial plasma accelerator as a pre-ionization source. The experimental results of the plasma gun in conjunction with the existing theta pinch show a significant improvement from the previous energy deposition by a factor of 14 or higher, resulting in a maximum energy and heat flux of 0.065 ± 0.002 MJ/m2 and 0.43 ± 0.01 GW/m2. A few ways to further increase the plasma heat flux for LiMIT experiments are discussed.
Original language | English (US) |
---|---|
Pages (from-to) | 2822-2826 |
Number of pages | 5 |
Journal | Fusion Engineering and Design |
Volume | 89 |
Issue number | 12 |
DOIs | |
State | Published - Dec 1 2014 |
Keywords
- Liquid lithium
- Plasma gun
- Plasma-wall interaction
- Pulsed plasma source
- Theta pinch
ASJC Scopus subject areas
- Civil and Structural Engineering
- Nuclear Energy and Engineering
- General Materials Science
- Mechanical Engineering